Update 'requests' lib to v2.0.

third_party/requests/compat.py

Index: third_party/requests/compat.py
diff --git a/third_party/requests/compat.py b/third_party/requests/compat.py
index bcf94b00670604269a8e5bf60ddbb517c8caf4f9..0d61a572df619d5538c6db07af3b9db60d65f587 100644
--- a/third_party/requests/compat.py
+++ b/third_party/requests/compat.py
@@ -83,13 +83,14 @@ except ImportError:
 # ---------
 
 if is_py2:
-    from urllib import quote, unquote, quote_plus, unquote_plus, urlencode
+    from urllib import quote, unquote, quote_plus, unquote_plus, urlencode, getproxies, proxy_bypass
     from urlparse import urlparse, urlunparse, urljoin, urlsplit, urldefrag
     from urllib2 import parse_http_list
     import cookielib
     from Cookie import Morsel
     from StringIO import StringIO
     from .packages.urllib3.packages.ordered_dict import OrderedDict
+    from httplib import IncompleteRead
 
     builtin_str = str
     bytes = str
@@ -100,11 +101,12 @@ if is_py2:
 
 elif is_py3:
     from urllib.parse import urlparse, urlunparse, urljoin, urlsplit, urlencode, quote, unquote, quote_plus, unquote_plus, urldefrag
-    from urllib.request import parse_http_list
+    from urllib.request import parse_http_list, getproxies, proxy_bypass
     from http import cookiejar as cookielib
     from http.cookies import Morsel
     from io import StringIO
     from collections import OrderedDict
+    from http.client import IncompleteRead
 
     builtin_str = str
     str = str